Split sleeve basing adaptor



June 27, 1961 M. F. FUNK ETAL SPLIT SLEEVE BASING ADAPTOR Filed May 27, 1957 J. H. 27 VEFZHULT A- H. WENNE/L? United States Patent ()fifice 2,090,003 Patented June 27, 1961 SPLIT SLEEVE BA'SING ADAPTOR Melvin F. Funk, Hellertown, and Jacob H. Overholt, Fullerton, Pa., and Allen H. Wenner, Saugerties, N.Y., assignors to Western Electric Company, Incorporated,

New York, N.Y., a corporation of New York Filed May 27, 1957, Ser. No. 661,917 1 Claim. (Cl. 1541.6)

This invention relates to basing'adaptors, particularly adaptors for holding base and bulb-like parts of articles in assembly while being cemented together, and methods of basing articles.

Heretof ore basing adaptors were in the form of castings which necessitated thick wall interfitting structures requiring considerable time for the application of sufiicient heat to cure the cement binding the parts together. Furthermore, there are variations in the outer diameters of the bulb parts as well as base parts and to compensate therefor in the castings of the former basing adaptors it was necessary to provide sutficient clearance between the bulb and base parts and their respective adaptor parts to allow for the largest possible dimensions of the parts. For this reason accurate central alignment of the bulb and base part for each article was not assured. Furthermore the casting type adaptors constructed of two or more portions arranged for interfitting engagement required greater time in assembly and greater space in an oven for curing the cement.

The objects of the present invention are a basing adaptor which is simple in structure, highly efficient in readily aligning parts of articles, and a method of basing articles.

In accordance with one of the objects of the invention the basing adaptor includes a sleeve formed of a suitable metal and of suflicient thinness to be resilient, the inner diameter of the sleeve being smaller than the smallest diameter of the parts and the sleeve being split at one position for its full length to adapt it to be Sprung open to receive a bulb part and a base part in assembly, when forced into the sleeve, and the resilient nature of the sleeve firmly gripping both parts regardless of their diameters and holding them in central alignment with each other.

The method, in accordance with the object, includes surrounding the parts with a split sleeve of a suitable metal and of sufiicient thinness to be resilient to hold the parts in central alignment and to position a thin metal wall adjacent a cement disposed at the junctures of the parts, and heating the metallically surrounded article for a length of time suflicient to cure the cement.

Other objects and advantages will be apparent from the following description when considered in conjunction with the accompanying drawings wherein:

FIG. 1 is a vertical section view of one species of adaptor with parts of an article in assembly disposed therein;

FIG. 2 is a vertical elevation view of the species of adaptor shown in FIG. 1;

FIG. 3 is a vertical sectional view of another species of adaptor; and

FIG. 4 is a front elevational View of the species of adaptor shown in FIG. 3 mounted on a conveyor in an oven.

The adaptor shown in FIGS. 1 and 2 includes a sleeve formed of metal of suflicient thinness to be resilient and capable of standing rapid oxidation without embrittlement or rapid deterioration. An entrance end 11 of the sleeve is flared outwardly to permit the parts to be inserted readily.

The opposite end of the sleeve is tapered inwardly at 12. This portion of the sleeve being uniform in contour and assisting in centering a bulb part 14 with a base part 15 of an article. The parts 14 and 15 are initially assembled with lead wires 16 from the bulb part extending through terminals 17 of the base and a quantity of cement 18 positioned to initially adhere to the inner wall of the base adjacent the juncture of the parts. After the adaptor 10 has been split at 20 for its full length, the assembly may be forced, bulb first, into the adaptor. While forcing the parts of the article into the adaptor the adaptor will be sprung open sulficiently to admit the parts and at all times will firmly grip the parts regardless of their differences in sizes. In most instances the bulb part 14 is smaller in diameter than the base part 15 and, although the base part may cause the lower portion of the adaptor to be forced open a greater distance than the top portion, as illustrated in FIG. 2, the top portion will hug the bulb part firmly and, with the cooperation of the inwardly tapered portion 12, hold the bulb part in central alignment with the base part.

The species of the invention shown in FIGS. 3 and 4 are similar in every respect to the features of the species shown in FIGS. 1 and 2 with the exception of the provision of portions of the sleeve 21 with difierent diameters to compensate for relatively wide differences in the parts being assembled. In this instance the sleeve 21 has its largest portion 22 near its outwardly flared entrance end 23 to receive a base part 24 of the article while the smallest diameter portion 25 includes approximately the upper half of the sleeve for the bulb part 26 of the article. This adaptor has an inwardly tapered end 27 to engage the rounded end of the bulb and hold it in central alignment with the base part 24, which includes a cement 28 therein adjacent the juncture with the bulb part 26. The adaptor, 21 is split at one position 29 for its full length and contains the same features inherent in the adaptor shown in FIGS. 1 and 2 wherein each part of the article is gripped firmly regardless of variations in diameter to assure central alignment of the parts.

The method steps may be carried out through the use of either adaptor 10 or 21 and the assistance of a conveyor 31 adapted to more the articles in their adaptors through an oven 32. The oven 32 is provided with a suitable heating unit 33 to heat the articles and their adaptors during a given length of time suificiently to cure the cement 18 FIG. 1 and 28 FIG. 3. In carrying out the method steps, a split sleeve of suitable metal and suflicient thinness to be resilient is placed around the parts 14 and 15 or the parts 24 and 26 to hold them in central alignment and the resulting thin metal wallv is positioned adjacent the cement disposed at the juncture of the parts. The metallically surrounded articles as shown in FIG. 4 are heated for a sufilcient length of time to cure the cement.

With the present adaptors and the method of basing the articles, there is a great reduction in maintenance and labor costs with a great increase in output and a reduction of defective parts due to misalignment. The inherent resiliency of the adaptors will cause them to firmly grip their respective parts regardless of variations of the diameters of the parts and to maintain these variations centrally located in the adaptors to assure accurate central alignment of the parts. Furthermore the thin wall structures of the adaptors permit heat to penetrate them more readily, reaching the cement 18 and 28 to allow the curing operation to begin and to carry on to completion more rapidly. Furthermore the thin wall structure of each adaptor surrounding the area of the cement permits, not only more rapid heating but more rapid cooling. The rapid cooling is particularly important in permitting the quick handling and removal of the assembled articles after the curing operation has been completed. This is the result of the material in the adaptors having a relatively high coeflicient of thermal conductivity to enable heating the cement for proper curing and the distribution of heat uniformly around the joint between the base and bulb.

It is to be understood that the above described arrangements are simply illustrative of the application of the'principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is:

A basing adaptor for positioning and holding misaligned, unsecured cylindn'cal bulb and base parts of a first and second diameter respectively with their central axes in alignment with each other during curing of cement disposed at the juncture of the parts to secure the parts together, the adaptor comprising a one piece resilient metallic split sleeve extending longitudinally and in its unstressed condition having an upper cylindrical portion with an internal diameter slightly less than said first diameter and an internal lower cylindrical portion with a diameter slightly less than said second diameter, the sleeve having opposing edges extending longitudinally for its entire length to provide an opening therebetween so that the sleeve opens to receive and firmly grip a substantial portion of the parts to hold them in central alignment with each other, and the lower cylindn'cal portion having its end flared outwardly for receiving the parts and the upper cylindrical portion having its end bent inwardly for limiting the axial movement of the parts and holding them'in central alignment with respect to each other while they are being permanently secured together.

References Cited in the file of this patent UNITED STATES PATENTS 1,330,702 Harrington Feb. 10, 1920 1,765,470 Wales June 24, 1930 2,050,838 Hafecost et a1. Aug. 11, 1936 2,820,082 Gray et al. J an. 14, 1958 2,862,991 Reardon Dec. 2, 1958 FOREIGN PATENTS 35 ,733 Great Britain July 16, 1931 

